From a wiki search;
"The plastic 45 RPM single is manufactured in PVC (vinyl), or more rarely, in cheaper and more brittle polystyrene. The first 7" records were monaural, but by 1971, almost all 45 RPM records were produced in stereo."
Oh, and,
I know nothing about jukeboxes other than they are for restoration masochists
In all sincerity, I wish you the best with it
